Measuring forces and torques in all 3 planes using LabVIEW

Last Updated on Saturday, 07 August 2010 04:06 Written by Administrator Friday, 11 December 2009 08:42

Introduction:

Force/ Torque sensors have a lot of applications in automations and robotics such as:

- Robotic part insertion verification of mechanical and electrical component assembly.

- Polishing, grinding where robot is required to apply a constant force.

- Force/torque feedback for manipulators in nuclear environments.

- Physical rehabilitation and prosthetics research.

- Product testing - such as steering wheel torque and automotive  seat testing

- Haptic Devices

 Hardware Description:

NI PCI-6220 Card:

- 16-Bit, 250 kS/s, 16 Analog Inputs

- 24 digital I/O, 32-bit counters, digital triggering

- NI-MCal calibration technology for increased measurement accuracy

- Correlated DIO (8 clocked lines, 1 MHz)

- NIST-traceable calibration certificate and more than 70 signal conditioning options

- Select high-speed M Series for 5X faster sampling rates or high-accuracy M Series for 4X resolution

- NI-DAQmx driver software and NI LabVIEW SignalExpress LE interactive data-logging software

The Delta Force/ Torque Sensor:

- Extremely High Strength :

+ Precision machined from high-strength aircraft aluminum.

+ Overload pin stops make this an especially rugged transducer.

+ Maximum allowable single-axis overload values are 2.8 to 12.9 times rated capacities.

- High Signal-to-Noise Ratio:

Silicon strain gages provide a signal 75 times stronger than conventional foil gages. This signal is amplified, resulting in near-zero noise distortion

Software Description :

Front Panel :

Block Diagram:

Results:

UnBias Mode :

Bias mode :